There are some kinds of cheats that are unique to particular genres, for example, first person shooters will have cheat codes for unlimited health and armour, unlimited bullets, enhanced jumping abilities, zero gun reload time, auto aim, one shot kills, unlocking all the guns, the possibilities are just endless and unique at the same time. It just depends on how much the developers want users to play around with the game. Likewise, different genres have different kinds of cheats, and some cheats are particular to a game. There are a number of cheats that are very fun to turn on and they act as those little extra bonuses when you are done playing or are getting bored with playing that game.